Function Test On The Airbag System

1. Function test of the airbag system:
   1. 1.1. Move the driver's seat back and up as far as possible.
   2. 1.2. Unclip front cover of driver's seat sub-frame.
   3. 1.3. PIWIS Tester 9718  must be connected and switched on.
   4. 1.4. Switch on ignition.
   5. 1.5. Establish communication with the airbag control unit.
   6. 1.6. Read out fault memory: No fault stored.
      WARNING: Performing the drive link test when vehicle is in motion!

      • Danger of injury if the drive link test is carried out when the vehicle is in motion! The following conditions must be satisfied when carrying out the drive link test:

      → Never carry out the drive link test when the vehicle is in motion.

      → The drive link test must always be carried out on a stationary vehicle in a workshop with sufficient commercially available tools. The cutoff relay must be activated again following the drive link test. Only then can the engine be started again (see warning note below).

   7. 1.7. Start the engine and activate central locking system with the switch in the door trim panel.
   8. 1.8. Start the Drive links menu.

      Information 

      • When performing the drive link test: 
      • The hazard warning lights are activated. 
      • The central locking system is opened. 
      • Triggering of the airbag units is simulated. 
   9. 1.9. Switch ignition off and then on.
   10. 1.10. Pull out ignition key and disconnect battery. Route the ground strap so that all contact with a ground carrier (e.g. body, seat frame) is avoided. → WM 9000IN WORK INSTRUCTIONS AFTER DISCONNECTING THE BATTERY (ALL MODELS)
       CAUTION: Danger of injury and damage to property as a result of incorrect handling of airbag units! Always observe the safety regulations for handling airbag units. Pull out ignition key. Disconnect battery. Route or isolate ground strap so that all contact with a ground carrier (e.g. body, seat frame) is avoided. → WM 9000IN WORK INSTRUCTIONS AFTER DISCONNECTING THE BATTERY (ALL MODELS) After the battery is disconnected, always wait for one minute before disconnecting the airbag plugs.
2. Simulate the fault:
   1. 2.1. Simulate the fault using the side airbag, for example. Move seat all the way up.

      Information 

      • To check the function of the airbag system, a plug connection is disconnected from an airbag unit. A fault code - Static fault - must then be stored in the Porsche System Tester. 
   2. 2.2. Fold up the retainer on the plug socket -1- (-A-)  , press locking mechanism -B-  on the airbag plug -2-  and pull out the plug -C-  .
   3. 2.3. Connect the battery and switch on ignition.
   4. 2.4. Read out fault memory. Static fault present.
      Fig 1: Pressing Lock Mechanism -B- On Airbag

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.
3. Correct the fault:
   1. 3.1. Switch off ignition, disconnect the battery and wait one minute.
   2. 3.2. Fold up the retainer -A-  on the plug socket -1-  and insert plug -2- (-B-)  until the plug engages securely.
      Fig 2: Folding Retainer -A- On Plug Socket

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.
4. Read out and delete faults:
   1. 4.1. Connect the battery, switch on ignition and read out the fault memory with the Porsche System Tester.

      Information 

      • Fault memory shows a sporadic fault. 
   2. 4.2. Erase fault memory.

Carry out work instructions after disconnecting the battery. → WM 9000IN WORK INSTRUCTIONS AFTER DISCONNECTING THE BATTERY (ALL MODELS) .